I have a brinsea 20 that has a glass bulb thermometer. It holds temp very steady at just a smidge over 99*. My first batch I had two hatch out of 14 that were fertile. Many were late quitters. The two that hatched hatched early. I put in a humidity gauge that also has a temp reading. It shows 103*!! Since the two that hatched came a couple of days early should I believe the digital and lower the temp on my second batch? They have been in 4 days.